Gaithersburg, Maryland Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Gaithersburg, MD Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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B
Income Around average
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A+
Education Top grade
Source: Map AI Methodology
Population
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| Population | 71,117 | 6,204,886 | 337,468,954 |
| Population density (per sq mi) | 6799.1 | 500.2 | 86.4 |
| Population growth (%/yr) | 1.23% | 0.51% | 0.59% |
| Median age | 38.9 | 38.0 | 37.3 |
| Households | 26,438 | 2,362,551 | 130,235,071 |
Population in Gaithersburg grew by 30.3% from 2009 to 2024, reaching 71,117 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Gaithersburg is Millennials, aged 29–44, at 25.6% of residents. That is 3.3 points above Maryland as a whole.
- Gen Z 13–28 14,551 20.5% +0.2 pts
- Millennials 29–44 18,175 25.6% +3.3 pts
- Gen X 45–60 15,039 21.1% on par
- Boomers 61–79 8,666 12.2% -4.3 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Maryland, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 52.5% of the people living in Gaithersburg and men 47.5%.
- Women 52.5% Maryland 51.5%
- Men 47.5% Maryland 48.5%
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Economy
Gaithersburg has a the economy index of B, which means it is quite prosperous.
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| Median household income | $106,919 | $103,916 | $80,455 |
| Income growth (%/yr) | 3.58% | 3.98% | 4.80% |
| Unemployment rate | 5.2% | 4.8% | 5.2% |
The median household income in Gaithersburg is about 3% higher than in Maryland.
Housing
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| Median home price | $393,858 | $267,101 | $248,835 |
| Median rent | $2,069 | $1,704 | $1,407 |
| Homeownership rate | 47.0% | 67.6% | 65.2% |
The median home price in Gaithersburg is about 15.9 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $2,069 per month for that long.
Commute Time & Mobility
Commuters in Gaithersburg spend about 53 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 223 hours, about 9.3 full days, spent commuting.
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 26.7 | 28.3 | 22.4 |
| Round-trip commute (min) | 53.4 | 56.5 | 44.8 |
| Yearly time spent (hours) | 223 | 236 | 187 |
| Estimated yearly cost | $6,898 | $7,301 | $5,790 |
| Work from home | 24.6% | 19.3% | 15.0% |
| Highway traffic (vehicles/day) | 32,211 | 16,437 | 8,813 |
| Local road traffic (vehicles/day) | 3,592 | 2,353 | 1,355 |
The average commute time in Gaithersburg is 27 minutes, shorter than the 28 minutes in Maryland.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Gaithersburg has a education index of A+, which means it is exceptionally educated.
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 49.4% | 39.3% | 31.6% |
| Average household size | 2.67 | 2.57 | 2.53 |
Health
Gaithersburg has a health index of A, which means it is very healthy.
| Metric | Gaithersburg | Maryland Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.4 | 78.4 | 78.3 |
| Self-rated poor health | 10.2% | 13.2% | 16.3% |
| Smokers | 10.2% | 15.9% | 19.0% |
Gaithersburg, MD Compared With Nearby Cities
Gaithersburg, MD is the 2nd largest of the 4 cities compared here, 71,117 residents against a local median of 25,048. Gaithersburg, MD's median home price, at $393,858, runs 163% above the $149,515 typical of the cities around it.
The cities themselves spread $327,610 on median home price, so Gaithersburg, MD sits at one end of an already wide local range rather than apart from it. Gaithersburg, MD has the highest median home price of the 4 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Gaithersburg, MD | 71,117 | $106,919 #3/4 | $393,858 #1/4 | 26.7 min #1/4 |
| North Potomac, MD | 23,845 | $183,530 | $34,012 | 30.1 min |
| Montgomery Village, MD | 25,048 | $94,841 | $149,515 | 30.3 min |
| Germantown, MD | 82,710 | $113,177 | $361,622 | 27.7 min |
Frequently Asked Questions
Common questions about Gaithersburg, Maryland.
How big is Gaithersburg, Maryland by population?
About 71,117 people live in Gaithersburg, Maryland, in 26,438 households of 2.7 people on average. The median age is 38.9, so residents are older than the U.S. median of 37.3 by about 2 years.
How densely populated is Gaithersburg, Maryland?
Averaged over its land area, Gaithersburg, Maryland has 6,799 people per square mile, a density typical of a city. That is about 79 times the U.S. average of 86.
Can a typical household afford a home in Gaithersburg, Maryland?
The median home costs 3.7 times the median household income ($393,858 against $106,919), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $2,069 a month takes about 23% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
What share of adults in Gaithersburg, Maryland have a college degree?
49.4% of adults in Gaithersburg, Maryland hold a bachelor's degree or higher (about 1 in 2), well above the U.S. share of 31.6%.
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